Dishwashing machine



March 31, 1953 J. o; WAGNER 2,

DISHWASHING MACHINE Filed July 22, 1947 2 SHEETSSHEET 1 IN V EN TOR.

Jaw/v 0. Men/E ATmQ/VEK Patented Mar. 31, 1953 I UNITED STATES PATENT OFFICE 2,633,140 DrsHWAsHING MACHINE 7 John D. Wagner, Palisade, N. J. Application July 22, 1947', Serial No. 762,587 9 claims *(01. 134-1121) is the provisionof novel means for circulating 1 waterwithin 'the dish basket. 7

Another object is the provisionof water circulating means which shall provide a flow of water within the basket from a multiplicity of points immediately adjacent thereto, the water flowing from said points in a multiplicity of vertical and horizontal angles to produce numerous streams which impinge on each other and then travel inward, all without the use of pipes or other complicated mechanisms.

Still another object is the provision of means for centrirugally elevating the water within the casing to the point from which it -commences to flow inwardly of the basket.

' Another and further object is the provision of novel strainer means by which dirt which washed from the dishes is entrapped the bottom of the apparatus and kept from recirculating, so that the waterimpinging on the dishes is always clean.

In accomplishingthe objects of the present invention, a casing is provided with a central hole in the topthereof, and concentrically with said hole the dish basket is suspended stationarily from the casing. A pot is revolubly mounted in the casing and extends so as substantially to surround the dish basket. Means ior'revolving the pot, preferably in the form or an electric motor connectedby a belt and pulley to the shaft of the pot, are mounted in the casing. The pot. is of generally cylindrical construction, open at the top, and flaring outwardly from bottom to top, The, bottom of the pot is generally of saucer shape. An annular 'stramer is concentrically mounted the not substantially at the junction or thebottom with the tapered cylindrical side wall. Elevator fins are mounted on the inner surfacecf the wall of the pot and inclined from the vertical backward upwardly relative tothe direction of the rotation of the pot.

The pot is thus adapted to causea relatively small amount of water placed in its bottom to" mount up-around the sides "whenv the pot rotated. Deflectors are mounted in the casing 6 of which the s n f pplication will b the pot i a substantial y vertically extending:

arcuato planevdeflectors are support d on:

rods. e tendin downward. trend the casingad iacent to the basket, and. the plan of the e. flcc or extends arcuately iroin its rod the rection of rotation of the.- not. outwardly 113cm he bask t o a point of close, proximity to the pot Th of water centrifugally rai ed a und the wall of the. not by rotation oi the no is concentrated by these deflectors into a relatively small space immediately in front at each d flector and the acute angle formed:

tween the deflector and, the wall of the no The d flector comprises numerous Examinations.

The deflector either consist oi a plate of p rforat d metal. or of a sheet of e panded; m tal... The circularlytraileling water, as it is crowded into the v between, the, wall of th Pot and th deflector, passes through the deflector, the walls of the foraminations oi the. deflector changin the direction of: travel, of. the water so that it proceeds inwardly of. the basket to permeate the: same. It has been found preierable to employ four such, deflectors, and. each deflector QlIQlh lates water very completely through. somewhat. more than a quarter of the basket The walls. of the foraminations, whether said foraminations consist oi p rforations in a cerfq rated plate. or the open. p rtion of: an; exp nded: metal. sheet, ext nd in a plurality of: directions; so. that the: water concentrated between the, as doctor and the wall or the not, and directed against the; walls of the ioraminationsais caused to tr v l in many directions from the d fl ctor; Water hittin a ver i ally extendin wall will travel substantially horizontally i ward, while water hittinga part1. n of: t ewall: of the forainii nation whichis in mod: to the verti al will; travel inwardly alone an upward or: downward path. Suchdiversity of directions or travel or the water results. in convergence of the various; streams or water so formed.v so that the. water is: finally broken up into a mull;iplicitsr= oi inwardly travcling droplets, the path or each. or: which divergesirom the: other both vertically and horizontally; resulting. in a very complete washing of both sides of all the. dishes;

- Other objects of this invention will in part be obvious. and in part hereinafter pointed out. The invention accordingly consists in the features of construction, combinations; of elements, and arrangements of parts which will :be exem-: plified in the: construction hereinafter described looking in the direction of the arrow 4 of Figure 1.

Figure 5 is an axial section of the pot, with certain parts omitted for the sake of clarity.

Figure 6 is a section on the line 66 of Fig-' ure 5.

Referring now in detail to the drawings, my-

improved dish washing machine l comprises a substantially rectangular outer casing II, the latter comprising the top wall portion l2. Centrally mounted in top wall portion-l2 is the substantially cylindrical, upwardly open dish basket |3 of open wire work or similar construction, basket [3 comprising a rim l4 by which it is suspended from top wall portion |2, extending downwardly into the casing Basket |3 may be removed from casing H by lifting upwardly until basket l3 comes free of top wall |2.

A pot I5 is revolubly-mounted in casing so as to substantially concentrically surround basket |3, pot l5 extending from a point just belowtop wall portion |2 downward to a mounting plate I6 and being connected in conventional manner to a shaft I! mounted in bearings l8 and mounting a pulley l9 driven by a belt 20, the latter engaging the pulley of an electric motor,-the last mentioned pulley and motor not being shown.

' Pot |5 comprises a wall portion 2| of tapered cylindrical form, being of larger diameter at the top and being open at the top. Pot |5 further has a substantially saucer shaped bottom portion 22. -An annular strainer 23 is concentrically mounted in pot l5 substantially at the junction of wall portion 2| and bottom portion 22. A plurality of elevator fins 24, perferably three in number are equally spaced around wall portion 2| of pot |5 near the bottom thereof. The fins 24 are illustrated as comprising a sheet of metal or the like, the latter comprisinga mounting portion 25 which is welded or otherwise firmly fastened to wall portion 2|. Integral with portion-25 and extending perpendicularly to wall portion 2| of pot I5 is the intermediate portion 26offin 24. Integral with intermediate portion 26 and extending substantially parallel to wall portion 2|, is the blade portion 21 of fin 24. The surface 28 connecting the inner'surface of blade 21 to the inner surface of side wall 2| is inclined to the vertical, andits line of joinder to side wall 2| is likewise inclined to the vertical. The above construction of elevator fins 24 permits them to throw water up at comparatively low speeds of rotation of the pot, as blade portion 21 prevents escape of the water from the upward actuation of intermediate portion 26.

Deflectors 30 are mounted on rods 3| extending downwardly from upper wall portion |2 adjacent to basket l3. The rod 3| extends substantially vertically, and deflectors 30 .extend therefrom in a substantially vertical plane which further extends arcuately outward toward the wall 2| of pot I5, forming an acute angle therewith, as best seen in Figure 1. The arcuately extending body of deflectors 30 may consist of sheets of expanded metal, provided with hexagonal foraminations as illustrated in Figures 1, 2 and 4. Means for stiffening the body 30 and for regulating the curvature thereof are provided in the form of turnbuckles 32, connected at their inner ends to rod 3| and at their outer ends to the free end of defiectorbody 30.

Referring now to Figure 4, which is an orthographic elevaticnal viewon an enlarged scale looking in the direction of the arrow of Figure 1, it will be seen that the deflector body ,30 comprises a plurality of walls defining the foraminations and comprising the surfaces 33, 34, 35, allextending substantially perpendicularly to the direction of the arrow 4, of Figure l, the surfaces 33further extending substantially vertically, the surfaces 34 facing downwardly, and the surfaces 35 facing upwardly.

' In operation, basket I3 is filled with dishes and the saucer shaped bottom portion 22 of pot I5 is partially filled with water. Pot I5 is then caused to revolve clockwise of Figure l. The water in the saucer shaped bottom portion 22 is thrown outward by centrifugal action, and passes upwardly through strainer 23. The water further mounts up the side 2| of pot l5, since the latter is tapered outwardly toward the top. The water is then caught by the elevator fins 24, and forced upwardly between wall 2|, blade 21, and surface 28, being raised to the fullheight of pot l5. Deflectors 30 cause the water to be concentrated in the acute angle between deflectors 30 and the wall 2| of pot IS. The unusual feature of deflectors 30- is that they curve in the direction of rotation of pot l5 to cause its concentration of water against the pot wall in the relatively small space defined by the pot wall and the deflector. The concentrated water then is thrown against the surfaces 33, 34, 35 extending substantially perpendicularly to the direction-of travel of the water, and the water is thus deflected inwardly of basket I3 and completely permeates the same. The water striking the surfaces 33 travels inwardly, following a substantially horizontal path. The water striking surfaces 34 also travels inwardly of basket |3, however it follows a downward path since surfaces 34 face downwardly. The water striking surfaces 35 also travels inwardly, but also upwardly, since surfaces 35 face upwardly. The water leaving .each of the surfaces 33, 34, 35, at any given moment will be traveling in a particular direction and with a' particular velocity, although the direction and velocity will both vary from moment to moment as the velocity and thickness of the water film striking these surfaces will vary due to the surgingnature of the mass of water as it reaches the space-between deflector 30 and wall 2|. The variously directed streams of water converge on each other at various points inside and outside basket I3, and break into droplets which continue inwardly in an infinite variety of horizontal and vertical directions. The horizontal angle of travelof wateras it leaves the surfaces 33, 34, 35 will vary with the velocity and thickness of the; water film impinging on the surfaces and also with the angle at which said surfaces are disposedto wall 2|, it being remembered that defiector body 30 extends in an arcuate plane and that while surfaces 33, 34, 35, being adjacent wall 2|, are substantially perpendicular thereto, corresponding surfaces in body 30 further removed from wall 2| will extend at a different angle thereto than thesurfaces 33, 34, 35. Each deflector 30 therefore throws its water over a ficienty t,o; completely permeate every part of basket l3, each deflector 30 being illustrated throwing water over-approximately one quarter of basketl3 as viewed from above. The novelty of, the deflectors 39 is therefore seen to further consist, in the fact that in addition to their being. curved. in the direction of rotation of potl5 they are. of foraminate construction, andoperate byfimpingement of the waterconcentrated betweenthemv and the wall 2| on the surfaces 33, 34, 35, the latter constituting walls of the foraminations of the body an Referring now to Figure 8, an alternate form of deflector body M] is illustrated. Body All com prises principally an -arouately extendingplate of perforated metal. The perforations ll permit the escape of water from the comparatively small space into which it has been concentrated between deflector body 49 and the wall 2| of pot It. The cylindrical wall portion 52 of the perforations 4| comprise portions extending more or less perpendicularly to wall 2! and the direction of travel of the concentrated water, the various portions of the wall 42 further extending vertically and at various degrees of inclination to the vertical so that water impinging thereon is thrown partly horizontally inward and partly downwardly inward and partially upwardly inward of basket [3, similarly to the action more particularly described in connection with deflector body 30.

It will thus be seen that there is provided a device in which the several objects of this invention are achieved, and which is well adapted to meet the conditions of practical use. As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiments above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawing is to be interpreted as illustrative and not in a limiting'sense.

What is claimed is:

1. Water elevating means for a dish washing machine of the type comp-rising a casing, a dish basket supported therein, a pot open at the top and mounted in said casing for substantially concentric rotation around said basket, and means for dispersing water which has been elevated, said elevating means comprising a water elevating fin firmly connected to the side wall portion of said pot, said fin comp-rising a portion extending in a plane substantially perpendicular to said side wall portion, said fin further comprising a portion extending in a plane substantially parallel to said side wall portion and in spaced relation thereto.

2. Water dispersing means for a dish washing machine of the type comprising a casing, a dish basket supported therein, and a pot open at the top and mounted in said casing for substantially concentric rotation around said basket, said means comprising a water deflector sheet stationarily supported between said pot and said basket and extending outwardly toward said pot in'the direction of rotation of said pot, said deflector sheet being formed with foraminations through which the water will pass and form a 6? multiplicity "of streams proceeding'in a. imulti plicity of directions. a r

3. Water dispersing means according to claim 2, the walls of said foraminations extending substantially perpendicularly to the wall of. said pot,- and some of said walls further facing downwardly while other of said walls further face upwardly.

4.Wate'r dispersing means according to claim" 2, said water'deflector sheet further extending in an arcuate plane. 1 v 1 5. Water dispersing means for adish washing machine of the type comprising a. casing, a. dish basket supported therein, and a pot open at the. top and mounted in said casing for substantially concentric rotation around said basket, saidmeans comprising'a' plate stationarily supportedbetween said pot and said, basket inside said pot and extending outwardly toward said pot in thedirection of rotation of said pot, said plate-being formed with a multiplicity of cylindrical foraminations, the walls of said foraminations comprising portions facing substantially horizontally and further portions facing downwardly and fnr ther portions facing upwardly.

6. Water dispersing means for a dish washing machine of the type comprising a casing, a dish basket supported therein and a pot open at the top and mounted in said casing for substantially concentric rotation around said basket, said means comprising a rod extending fixedly and substantially vertically downward from said casing between said pot and said basket and a deflector sheet attached along one of its edges to said rod and extending in a substantially vertical, curved plane outwardly toward said pot and in the direction of rotation of said pot, said deflector sheet being free standing from said rod and the outer boundary of said sheet being in close proximity to said pot, said sheet further being formed with foraminations, some portions of the walls of said foraminations facing substantially horizontally, other portions of said walls facing downwardly and still other portions facing upwardly, and all of said portions of said walls closest to the inner surface of said pot extending substantially perpendicularly to said inner surface.

'7. Liquid dispersing means comprising a pot open at the top and supported for rotation on a substantially vertical axis, and a plurality of stationarily supported deflector sheets extending downwardly into said pot adjacent the circumferential wall thereof and extending outwardly toward said wall and in the direction of rotation of said pot, said deflector sheets being formed with a plurality of foraminations, the walls of said foraminations comprising portions facing at substantial inclinations upwardly and downwardly, said deflector sheets further being located outside of a large empty central cavity of said pot, whereby liquid located around the inside surface of said pot during revolution thereof is forced through said foraminations in a multiplicity of converging streams and broken into droplets substantially throughout said central cavity.

8. Water dispersing means for a dish washing machine of the type comprising a casing, a dish basket supported therein, and a pot open at the top and mounted in said casing for substantially concentric rotation around said basket, said means comprising a plate stationarily supported and located outside said basket and inside said pot and extending outwardly toward said pot in th direction of rotation of said pot, said plate being formed with a multiplicity of hexagonal foraminations, the walls of said foraminations comprising portions facing substantially horizontally and further portions facing downwardly and further portions facing upwardly.

9. Liquid dispersing means comprising a pot open at one end and supported for rotation on a substantially fixed axis, and a plurality of stationarily supported deflector sheets extending into said pot adjacent the circumferential wall 10 thereof and extending outwardly toward said wall and in the direction of rotation of said pot, said deflector sheets being formed with a plurality of foraminations, the walls of said foraminations comprising portions facing at substantial inclinations one to the other, said deflector sheets further being located outside of a large empty central cavity of said pot, whereby liquid located around the inside surface of said pot during revolution thereof is forced through said foraminations in a multiplicity of converging streams and broken into droplets substantially throughout said central cavity.

JOHN C. WAGNER.

8 JREFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

